Nokia E55 - Manual (Page 126)

into your device. Call barring and call diverting cannot be
active at the same time.
You need your PIN2 code to activate and deactivate fixed
dialling or edit your fixed dialling contacts. Contact your
service provider for your PIN2 code.
Select
Options and from the following:
• Activate fixed dialling — Activate the fixed dialing.
• Deactivate fixed dialling — Deactivate the fixed dialing.
• New SIM contact — Enter the contact name and phone
number to which calls are allowed.
• Add from Contacts — Copy a contact from the list of
contacts to the fixed dialling list.
To send text messages to the SIM contacts while the fixed
dialling service is active, you need to add the text message
centre number to the fixed dialling list.
Certificate manager
Select Menu > Ctrl. panel > Settings and General >
Security > Certificate management .
Digital certificates are used to verify the origins of software
but do not guarantee safety. There are four different types of
certificates: authority certificates, personal certificates,
trusted site certificates, and device certificates. During a
secure connection, a server may send a server certificate to
your device. Upon receipt, it is checked through an authority
certificate stored in your device. You receive notification if
the identity of the server is not authentic or if you do not have
the correct certificate in your device.
You can download a certificate from a web site, or receive a
certificate as a message. Certificates should be used when
you connect to an online bank or a remote server to transfer
confidential information. They should also be used if you
want to reduce the risk of viruses or other malicious software,
and to check the authenticity of software when you
download and install software to your device.
Tip: When you add a new certificate, check its
authenticity.
View certificate details
You can only be sure of the correct identity of a server when
the signature and the validity period of a server certificate
have been checked.
To view certificate details, open a certificate folder, and select
a certificate and Options > Certificate details .
One of the following notes may appear:
•
Certificate not trusted — You have not set any
application to use the certificate. You may want to change
the trust settings.
• Expired certificate — The period of validity has ended
for the selected certificate.
• Certificate not valid yet — The period of validity has not
yet begun for the selected certificate.
• Certificate corrupted — The certificate cannot be used.
Contact the certificate issuer.
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